Bath and process for the electrolytic separation of rare metal alloys

US3980531A · kind A · utility

Assignee

• SCHERING CORPORATION · US

Inventors

• Rolf Ludwig · Eppstein, DE
• Josif Culjkovic · Berlin, DE

Key dates

• Filing date: Jul 3, 1975
• Grant date: Sep 14, 1976
• Expiry date: Jul 3, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D3/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A cyanide-free bath for the galvanic separation of rare-metal alloys in which a rare metal is present in the form of a thiosulphate compound. The rare metal may be gold and/or silver, and/or palladium. The rare metal is present in concentrations of 0.01 to 70 g/liter.